2421123 has 16 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 1465856.

The previous prime is 2421119. The next prime is 2421137. The reversal of 2421123 is 3211242.

It is a cyclic number.

It is not a de Polignac number, because 2421123 - 2² = 2421119 is a prime.

It is a super-2 number, since 2×2421123² = 11723673162258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2421163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (221130).

2^2421123 is an apocalyptic number.

2421123 is a deficient number, since it is larger than the sum of its proper divisors (1116957).

2421123 is a wasteful number, since it uses less digits than its factorization.

2421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its digits is 96, while the sum is 15.

The square root of 2421123 is about 1555.9958226165. The cubic root of 2421123 is about 134.2782330545.

Adding to 2421123 its reverse (3211242), we get a palindrome (5632365).

The spelling of 2421123 in words is "two million, four hundred twenty-one thousand, one hundred twenty-three".